Half-open limit fix is a programdesignedto change the maximum number of concurrent half-open outbound TCP connections (connection attempts) in the Windows system file tcpip.sys.

Microsoft first introduced this limit in Windows XP SP2 (Service Pack 2) and is present in all later versions of Windows. This was done to try to slow the spreading of viruses and malware from system to system and also to reduce the impact of infected systems participating in DoS (Denial of Service) attacks.

This limit makes it impossible for Windows systems to have more than 10 concurrent half-open outbound connections. After 10, new connection attempts are put in a queue and forced to wait.

Mack, reading the changelog states that winxp pro x64 is supported. Unfortunately I do not have a Windows XP x64 machine to test this. However if you have any issues I would suggest you contact the author http://half-open.com/contact_me_en.htm

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In this example I will be using BackTrack 5 R1 Gnome 32 bit.

You can either boot off the DVD or install it. The creating of a bootable DVD and installing BackTrack is beyond the scope of this tutorial.

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NOTE If you already have something in the OS Boot Parameters you will need to take note of this as you will need to put it back once the password reset is complete.